Whether this strong bacterium on Mars can survive?
The last that scientists want to find during life search on Mars, it is a colony of microbes which arrived a self-locking device from Earth. It is for this purpose decided to make experiment on delivery of the most hardy and strong bacteria in improbably heavy conditions for a survival.
In search of Martian life
Undoubtedly, to find life on other planet it would be extremely interesting. How we should it to look for and whether this opening can hint us at its possible detection? Four million dispute of Bacillus pumilus SAFR-032, very steady strain of bacteria, will go on a helium sphere to space border to bathe in extreme cold, to feel the lowest pressure and intensive ultra-violet radiation of the Sun.
The idea consists in creation of imitation of conditions which will be similar Martian that scientists could study better, what microbes or types of microbes represent the biggest risk for pollution. Pollution of Mars by terrestrial microbes, respectively.
«We want to be convinced that life which we will find on Mars, will be exact Martian, instead of pollution which we brought from Earth» — tells Ellen Shtofan’s leading scientific NASA.
«It is obvious, in those areas where there is a water, we should be careful — the extremely careful — when we study them. Thus these areas can be the most interesting to research» — she adds.
Strains of bacteria which will be put on trial, are quite often found in pure rooms where devices gather space. Experimental samples were divided into four groups one million dispute in everyone. One group will be exposed to influence of the okolokosmichesky environment within six hours, another — 12 hours, the third — 18 hours, the last — 24 hours then the experimental chamber will go on a parachute back to Earth.
To reach Mars, seven months or more long are necessary, but scientists say that expect to see changes in bacteria even after short influence of the okolokosmichesky environment.
«We expect to see quite measurable changes of viability of these dispute — and we can extrapolate the obtained data for longer period of time» — David Smith, the microbiologist from Ames’s Research center speaks at NASA.
In addition to search survived dispute, scientists will analyse a genome of cages in search of the changes connected with influence of a stratosphere.
«We hope, work like this will let to us know, what pollution can be expected. In it all essence of work» — speaks Smith.
Unlike similar experiments which are led outside of the International space station, in the forthcoming experiment on a conclusion of microorganisms in a stratosphere (E-MIST) disputes will be distributed by a thin layer so cannot take cover under the killed cages.
The experimental E-MIST chamber made trial start last year and now is certificated for scientific flights.